A bitter Polar blast is set to sweep the country next week, with temperatures to dramatically plummet.

The milder than usual temperatures across Britain lately will be blown away with a blanket of cold air.

The first signs of winter will be felt on Sunday when colder air grips northern parts of the country raising the risk of snow showers over Scotland.

The jet stream will plunge south bringing colder air across the UK during Sunday (Image: The Weather Company)

Widespread frost is expected in all areas on Monday and there could still be a brief return to milder conditions on Tuesday. But winds will veer to the north in midweek blowing directly from the Arctic and sending temperatures tumbling.

At the moment, Devon is unlikely to be majorly affected, but there will be at least a notable drop in temperatures across the county.

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The change of weather conditions has been influenced by the jet stream which has shifted direction way above the Atlantic.

It will edge northwards over Greenland and then dive southwards pulling the freezing Arctic air towards Europe via Norway and north-west Russia.

Predicted wind speeds that will pull cold air from the north (Image: The Weather Company)

Brisk chill winds blowing in from the North Sea will be a shock for many after the recent mild spell and there is even a chance of snow covering lower levels in the north during the early part of November.

Forecaster Katie Greening, of The Weather Channel, said conditions were set to get noticeably colder because of the jet stream dragging cooler air from the far north.

She said: “The jet stream will be shifted northwards over Greenland and Iceland before diving over the North Sea into central to eastern Europe.